Malting-drum



(No Model.) 2 Sheets-Sheet 1.

P. B. GIESLER. MALTI'NG DRUM.

N0. 507,536. Patented Oct. 31.1893.

P. B. GIESLER. MALTING DRUM.

N0. 50'7,536. Patented Oct. 31,1893.

UNITED STATES PATENT OF ICE.

FRANKLIN B. GIESLER, OF MILWAUKEE, WISCONSIN.

MALTING-DRUM.

l SPECIFICATION forming part of Letters Patent No. 507,536, dated October 31, 1893.

Application filed March 6, 1893- To all whom it may concern.-

Be it known that I, FRANKLIN B. GIESLER, a citizen of the United States, and a resident of Milwaukee, in the county of Milwaukee, and in the State of Wisconsin, have invented certain new and useful Improvements in Malting-Drums; and I do hereby declare that the following is a full, clear, and exact description thereof.

My invention has for its object to provide for a thorough agitation of a mass of. material in a rotative pneumatic malting drum, as well as to prevent possible stickingof the material onthe air distributer in said drum; and it consists in certain peculiarities of construction and combination of parts hereinafter described with reference to the accompanying drawings and subsequently claimed.

In the drawingsz-Figure 1 represents a vertical transverse section of a pneumatic malting drum embodying my invention, and Fig.

. 2, a vertical longitudinal section of the same.

Referring by letter to the drawings,A represents a grain-receiving drum having the peripheries of its heads impinged against the usual friction-disks B, fast on shafts C arranged in suitable hearings on opposite sides of the center of the drum, beneath the same, and, as is common in the art, these shafts are worm-geared to a drive-shaft D, this construction and arrangement of parts serving to impart rotation to said drum, this rotation being intermittent or constant, as the different steps in the conversion of grain to malt may require, and of such speed as is found best suited to the work. In common with drums of other pneumatic malting apparatus, the one herein shown is provided with the necessary openings such as grain-inlets, a malt discharge and a man-hole having suitable closures.

I show the present drum as having outwardly flanged central openings in its heads, the flanges b constituting trunnions that turn freely in chambers F, G, having closed outer ends. The chamber F has a damper-controlled tubular connection H with a duct I in trolled tube K connects the latter chamberserial No. 464,832- (No model.)

with a duct L through which cool, moist atmospheric air is drawn. I also show the drum as having one head thereof provided with a grated drain-outlet c inclosed by an exterior box 01 having a draw-off cock e, and centrally arranged in said drum to turn therewith is a perforated polygonal shell M, beveled at one end, this beveled end being opposite a transverse partition N perforated adjacent to its periphery and center, as shown in Fig. 2, this partition being the boundary of an air-space in the aforesaid drum. As a matter of preference the interior of the drum is provided with longitudinal ribs f arranged at intervals around its circumference, as illustrated in Fig. 1. The shell M herein shown has the same diameter at all points away from its beveled end and the perforations in said shell gradually diminish as the same recedes from the suction of the drum. Bythis construction I provide for an equal distribution of air throughout the length of the shell because of a gradual increase of resistance toward the point at which the suction is greatest. Supported in the shell M central of the latter is a pipe P having lines of perfora tions, and this pipe connects with other pipes Q, R, that respectively connect with sources of water and steam supply, these latter pipes being controlled by suitable valves.

By the construction and arrangement of parts herein specified the operations of washing, steeping, generating, withering and drying necessary in the conversion of grain to malt may be carried on in the same receptacle, but the essential feature of the present application is the perforated polygonal shell M centrally arranged in the drum.

In practice the mass of material in the r0- tating drum is lifted and turned over, and this agitation is aided by the longitudinal ribs f upon the interior circumference of said drum. At a certain point the material in the drum falls of its own gravity in an oblique direction transverse of said drum, as will be,

apparent from an observation of Fig. 1, and while at times said material may fall in a line parallel to and above faces of the perforated polygonal shell M, at other times, incidental to the rotation, corners of this shell will gradually rise above the aforesaid material and the latter in its fall will dam up against an elevated corner of said shell and fall over the same, as indicated by a dotted line diagram in Fig. 1. From the foregoing it will be seen that I provide for a very thorough agitation of the material in the drum and thereby prevent its adhesion on the shell.

WVhile a shell similar to the one herein shown and described may be preferable, I may vary its form and the arrangement of its perforations in a longitudinal direction Without departure from the spirit of my invention, and in transverse section this shell may have the triangular form shown or such other polygonal contour found desirable to employ.

While I have shown the partition N provided with the perforations set forth, this partition may be of any other suitable construc tion that will permit a suction of air through the shell M and the material in the drum.

Having thus described myinvention, what I claim as new, and desire to secure by Letters Patent, is

1. A rotative horizontal malting drum interiorly provided with a perforated shell of polygonal contour in transverse section open to an induced current of air, and having its perforations at variable intervals of its length, substantially as set forth.

2. A rotative horizontal malting drum interiorly provided with aperforated shell of polygonal contour in transverse section open to an induced current of air and beveled at that end farthest from the inlet of the air, and a the beveled end of the shell, this partition be ing of such construction as to permit an exhaust of said air, substantially as set forth.

3. A rotative horizontal malting-drum having one end thereof communicating with an air-exhaust and interiorly provided with a perforated longitudinal shell having a polygonal contour in transverse section and open to air at that end farthest from the exhaust, but of such construction as to have a gradual increase of resistance to the escape of'the air toward the point at which the suction is greatest; and suitable means for the provision of an air-space within the drum intermediate of said exhaust and adjacent end of the perforated shell, this air space being in communication with that portion of the aforesaid drum containing said shell, substantially as set forth.

4. A rotative horizontal malting drum having one end thereof communicating with an air-exhaust and interiorly provided with a perforated longitudinal shellhaving a poly onal contour in transverse section and open to air at that end farthest from the exhaust, but of such construction as to have a gradual increase of resistance to the escape of air toward the point at which the suction is greatest; suitable means for the provision of an air-space within the drum intermediate of said exhaust and adjacent end of the perforated shell, this air-space being in communication with that portion ofthe aforesaid drum containing said shell, a perforated pipe arranged within the aforesaid shell longitudinally of the same, and water and steam supply pipes connected to said perforated pipe, substantially as set forth. I

In testimony that I claim the foregoing I have hereunto set my hand, at Milwaukee, in

transverse partition in the drum adjacent to jthe county of Milwaukee and State of Wisconsin, in the presence of two witnesses.

FRANKLIN l3. GIESLER.

lVitnesses:

N. E. OLIPHANT, JOHN E. WILEs. 

